Medical guide wire

Abstract

The application discloses a medical guide wire which is used for conveying implanted instruments and comprises a metal core, one or more spiral filaments, one or more conveying elements and a boss, wherein the metal core is of a diameter-altered structure which sequentially comprises a linear structure, a stepped structure and a linear structure from a near end to a far end; the spiral filaments are fixed on the linear structure and the stepped structure which are positioned at the far end of the metal core; the conveying elements are fixed on the stepped structure of the metal core; and the boss is fixed on the stepped structure of the metal core behind the conveying elements. The medical guide wire provided by the application has the following advantages: as the metal core is provided with multiple conveying elements, during the conveying process, the conveying elements are implanted into the inner wall of an instrument by virtue of friction and provide thrust section by section, sothat all sections of the implanted instrument are subjected to uniform resistance, thus the problems of wrinkles and deformation of the implanted instrument caused by overlarge resistance during the process of conveying the implanted instrument due to the bending of a medical conduit are solved, thereby integrally conveying the implanted instrument into a human vessel through the medical conduit.

Description

technical field [0001] The present application relates to the field of medical devices, in particular to a medical guide wire. Background technique [0002] In arterial interventional procedures, implanted devices are usually delivered to the diseased part of the blood vessel to remodel the arterial wall. Delivery of implanted devices is usually accomplished using a guide wire coupled with a medical catheter. The existing guide wire generally includes: a variable-diameter metal core, a developed and / or non-developed helical wire covered by the distal end of the metal core, and a boss arranged on the metal core. When transporting, the medical catheter is first inserted into the diseased blood vessel, and then the implanted device is bound on the guide wire, and the implanted device is pushed into the medical catheter by using the boss on the guide wire, and then reaches the vascular lesion. [0003] Through the research on the prior art, the applicant found that only the bo...

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Problems solved by technology

[0003] Through the research on the prior art, the applicant found that only the boss provides thrust on the existing guide wire. When the implanted device is delivered, the bending degree of the medical catheter will change with the tortuous blood vessel. position, the resistance encountered during the delivery of the implanted device is relatively large, and it is easy to cause wrinkles and deformation of the implanted device at this time, resulting in the inability to complete the delivery process or the implanted device cannot fit well on the inner wall of the blood vessel after delivery, affecting Effect of surgery

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